Problems deploying a HttpModule in Asp.Net 4.0

Question

I want to do UrlRewriting. in order to do that I have written a HttpModule that runs upon the AuthorizeRequest event in the ASP.NET Http Modules chain (before the request is processed by the HttpHandler).

Context

I wrote an abstract class as a basic rewriter which implements the IHttpModule interface:

public abstract class BaseModuleRewriter : IHttpModule {
  public virtual void Init(HttpApplication app) {
    // WARNING! This does not work with Windows authentication!
    app.AuthorizeRequest += new ventHandler(this.BaseModuleRewriter_AuthorizeRequest);
  }
  public virtual void Dispose() { }
  protected virtual void BaseModuleRewriter_AuthorizeRequest(object sender, EventArgs e) {
    HttpApplication app = (HttpApplication)sender;
    this.Rewrite(app.Request.Path, app);
  }
  protected abstract void Rewrite(string requestedPath, HttpApplication app);
}

The real implementation of the module is the following class:

public class ModuleRewriter : BaseModuleRewriter {
  protected override void Rewrite(string requestedPath, System.Web.HttpApplication app) {
    // Just dummy, if the module works, I should never get to any page other than homepage
    UrlRewritingUtils.RewriteUrl(app.Context, "Default.aspx");
  }
}

In my web.config I have the following:

<configuration>
  ...
  <system.web>
    <httpModules>
      <add type="ModuleRewriter" name="ModuleRewriter"/>
    </httpModules>
  </system.web>
  ...
</configuration>

Actually this is a simple implementation of Url-Rewriting from an article posted in MSDN Megazine. I just made it simpler, but the approach is that one.

The problem

It does not work! When I deploy the module like I told you and request a page, I can get to all my pages of my website, when, on the contrary, I should always be "redirected" to Default.aspx.

What to do?

Additional info

First of all, one important information: My application pool is Integrated Mode targeting framework 4.0.

My web site is not compiled. I mean that I do not precompile my web site but I put all my code in the App_Code directory and let ASP.NET compile it when pages are requested. A direct consequence is that all my assemblies are put in the %sysroot%\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files\... directory.

I read some stuff where modules are deployed in the web.config by specifying the assemply as well, something like:

<configuration>
  ...
  <system.web>
    <httpModules>
      <add type="ModuleRewriter, ModuleRewriterAssembly" name="ModuleRewriter"/>
    </httpModules>
  </system.web>
  ...
</configuration>

But, being my stuff not precompiled, but entirely managed by Asp.Net, I cannot specify a different assembly. Is it needed to solve this problem? If so, what to do?

Thankyou

Answer 1

Depending on your appPool configuration (integrated vs classic mode), try adding

  <system.webServer>
    <modules>
      <add type="ModuleRewriter" name="ModuleRewriter"/>
    </modules>
  </system.webServer>